Gartner Research

How to Size and Estimate Applications in a Bimodal World

Published: 10 March 2017

ID: G00308855

Analyst(s): Mike Gilpin , Matthew Hotle

Summary

In many firms, the work of sizing and estimating software delivery is a dysfunctional game. Application leaders can avoid this dysfunction by adopting better sizing and estimating practices. As enterprise agile becomes more common, firms must employ different practices for different styles of work.

Table Of Contents

Analysis

  • Playing the Estimating Game
    • Myth 1. The Initial Estimate Is the "Right" Estimate
    • Myth 2. We Can Negotiate Estimates
    • Myth 3. Estimates From Inaccurate Data Will Prove Accurate
  • How You Should Play the Estimating Game
    • Functional Estimates
    • Task or Deliverable-Based Estimating
    • Experience-Based Estimating
    • Source Lines of Code (SLOC)-Based Estimating
  • How to Excel at the Estimating Game
    • 1. Use Multiple Techniques to Size or Estimate the Work
    • 2. Estimate Several Times During the Project, or Product Life Cycle
    • 3. Use the Delivery Team to Size the Work Whenever Possible

Gartner Recommended Reading

©2020 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Purchase this Document

To purchase this document, you will need to register or sign in above

Become a client

Learn how to access this content as a Gartner client.